<template>
  <div class="app-container">
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称" />
      </el-form-item>
      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Draft" label="未发布"/>
          <el-option value="Normal" label="已发布"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="courseQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="courseQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getCoursePageList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (current - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>
      <!--<el-table-column  label="课程名称" width="100" >
        <template slot-scope="scope">
          <img :src=scope.row.title width="50" height="50">
        </template>
      </el-table-column>-->

      <el-table-column prop="title" label="课程名称" width="200" />

      <el-table-column label="课程状态" width="80">
        <template slot-scope="scope">
          {{ scope.row.status==='Draft'?'未发布':'已发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数"width="80"  />

      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column prop="viewCount" label="浏览数量" width="60" />

      <el-table-column label="操作" width="600" align="center">
        <template slot-scope="scope">
          <router-link :to="'/course/info/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
          </router-link>
          <router-link :to="'/course/chapter/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲息</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="current"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getCoursePageList"
    />
  </div>
</template>

<script>
  import course from '@/api/course'
  export default {
    data(){
      return {
        list : null,
        current : 1,
        limit :10,
        total :0,
        courseQuery:{}
      }
    },
    created (){
      this.getCoursePageList()
    },
    methods :{
      getCoursePageList ( current =1){
        this.current = current;
        course.getCoursePageList(this.current,this.limit,this.courseQuery)
          .then(response => {
            this.list = response.data.rows;
            this.total = response.data.total;
          })
      },
      resetData() {
        this.courseQuery ={}
        this.getCoursePageList()
      },
      removeDataById(id){
        this.$confirm('此操作将永久删除课程信息, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          course.deleteCourse(id)
            .then(response =>{
              this.$message({
                type: 'success',
                message: '删除成功!'
              });
              this.getCoursePageList();
            })
        })
      }
    }
  }
</script>
